[vchkpw] vchkpw won't authorize non-virtual users

[Rob Yale]

Hi,

I just finished installing and configuring vpopmail as per instructions 
in Dave Sill's "The Qmail Handbook".  When I attempt to test 
authorization of a non-virtual user, it fails.  I telnet'ed to 0.0.0.0 
on port 110, specified "user rob" and then "pass 12345".  I then get 
"-ERR authorization failed".  Here is my /service/qmail-pop3d/run file:

#!/bin/sh
exec /usr/local/bin/softlimit -m 2000000 \
    /usr/local/bin/tcpserver -v -R -H -l 0 0 110 
/var/qmail/bin/qmail-popup \
        pop.yalemusic.ca /home/vpopmail/bin/vchkpw 
/var/qmail/bin/qmail-pop3d Maildir 2>&1

I've been searching for a way to debug this, but haven't found 
anything.  Can anyone suggest something that might be a good place to 
look?

Thanks,

Rob Yale
Yale Music
Composition and Production